Unlearned Checkpoint

Field Value
Unlearning method RMU
Base model meta-llama/Llama-3.1-8B-Instruct
Target concept Cannabis
Checkpoint type Full Model Weights
Rank / seed 200 / 42
Train eval protocol mc

Unlearning Configuration

Selected hyperparameters (from unlearned_checkpoints.json):

Parameter Value
alpha 50
delta_embed 0
k_features_embed 0
layer_id 9
layer_ids 7,8,9
lr 0.0001
n_tokens_edited 0
param_ids 6
setting_name S2_lid9_L789
steering 30

Primary Unlearning Metrics (held-out test, MC protocol)

Headline scores used for checkpoint selection:

Metric Train (after unlearning) Test (after unlearning)
Efficacy 1 1
Specificity 0.898 0.86
Harmonic mean 0.946 0.925
Relearning QA (MC) — 0.52

Full Evaluation (baseline → unlearned)

From evaluation/score_comparison.csv:

Metric Baseline (train) After unlearn (train) Baseline (test) After unlearn (test)
QA accuracy 0.92 0.04 0.98 0.18
QA fraction 1 0 1 0
SimDom accuracy 0.94 0.84 0.86 0.72
SimDom fraction 1 0.855 1 0.77
MMLU accuracy 0.62 0.6 0.65 0.639
MMLU fraction 1 0.946 1 0.973

Files in This Repository

File Description
unlearned_checkpoints.json Checkpoint metadata & hyperparameters
evaluation/evaluation_summary.json Full evaluation payload (train/test/relearning)
evaluation/score_comparison.csv Baseline vs. unlearned comparison table
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